Bridge-gate



(No Model.) 2 Sheets-Sheet 1..-

A. KOHLER'Q I BRIDGE GATE.

No. 502,975. I Y Patented Aug. 8, 1893.

2 Sheets-Sheet 2.

( No Model.)

A.-KOHLER. BRIDGE GATE.

Patented Aug. 8, 1.893.

' Us'r rrno- STATES" PATENT meet AUGUST KOHLER, OF CHICAGO, ILLINOIS.

BRIDGE-GATE.

SPECIFICATION forming part of iLetters Patent No. 502,97 5, dated August8, 1893.

Application filed May 19, 1893 Serial No. 474,755- (No model.) i

To all whom/it may concern.-

Be it known that I, AUGUST KOHLER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois; haveinvented certain new and useful Im provements in Bridge-Gates, of whichthe fol; lowing is a specification.

This invention relates to improvements in, bridge-gates, and especiallyto that class of gates, which are automatically raised and. lowered bythe turning of the bridge; and it consists in certain peculiarities ofthe con struction, novel arrangement, and operation of the various partsthereof, aswill be hereinafter more fully set forth and specificallyclaimed.

The objects of my invention are first, to provide a gate, which shall beautomatic in its operation, simple and inexpensive in construction, andmay be easily attached to draw or turn-bridges of the ordinaryconstruction; and second, such a gate in which the arms or uprightsconstituting the gate-obstruction, are automatically raised when thebridge isin position for traffic, and lowered when itis turned or closedin a position to allow the passage of vessels in the river or to preventtravel.

In order to enable others skilled in the art to which my inventionpertains to make and use the same, I will now proceed to describe it,referring to the accompanying drawings, in which Figure 1, is a planview of a bridge and a portion of the abutments or approaches thereof,with a part of one of said abutments broken away, in order to show'theoperating mechanism of one of the gates. Fig. 2, is a longitudinalsectional view of the bridge anda portion of the abutments, showing mygates in a raised position. Fig. 3, is a plan view of a portion of oneof the abutments, showing the gate-armsin section, their box, or casing,and the ratchet-gear. Fig; 4, is a sectional view of a portion of thebridge and one of the abutments, showing a portion of the gatearms andtheir operating mechanism. Fig. 5, is a face view of the supportingbrackets or standards for the gate-arms, their operating levers andmechanism. Fig. 6, is a rear view thereof. Fig.7,is a sectional view ofthe camgears or eccentric wheels for operating thelevers of thegate-arms. Fig. 8, is a perspective view of the right and leftratchet-gear detached from its shaft. Fig. 9, is a perspective view ofone of the right and left ratchetpieces,orbars,detached from the bridge,and Fig. 10, is a face view of portions of one of the gate-arms and itsoperating lever.

Similar letters refer to like parts throughout the different views ofthe drawings.

' in Figs. 2 and 3, are formed with a step b, or recess. Between therollers a, and the ends of the bridge, and on the lower surface thereof,and transversely therewith, is secureda right and left ratchet-piece O,which piece is adapted to engage with the right and left ratchet-gear G,which is mounted on a suitable shaft D, hav

ing its bearing for one end, in a journal-box d, located in theabutment, and the bearing for its other portion in the supportingbrackets E, for the gate-arms F, and their levers. The brackets orsupporting standards E, for the gate-arms, are firmly secured to theabutment, at their lower portions, and are covered at their upper partsby means of a casing or box E, which is provided in its top withsuitable slots or openings 6, through which the gate-arms extend andoperate.

As is clearly shown in Fig. 4, of the drawings, the standards orbrackets E, extend to near the top of the casing E, and have socuredbetween them on a suitable shaft e, having its bearings in the upperpart of said standards, the gate-arms F, which are preferably in theform of bars, and are provided on their lower ends with segmentalcogged-gears F, which mesh with correspondingly formed gears g, on theupper ends of the operating levers'G, which are fulcrumed at asuitablepoint to the supporting standards E, as is clearly shown in Figs. 4, 5,and 6. The lower portion of each of these levers is provided withlongitudinal slots g, within which fit and operate suitable pins orprojections h,

and h, on the operating or eccentric Wheels H, and H, the former ofwhich is mounted on the opposite end of the shaft D, from theratchet-gear. The wheel H, is eccentrically secured to the wheel H, bymeans of the pin or projection h, which not only serves for thispurpose, but also as an engaging connection for the slot in one of thelevers G, which is located between said wheels, while the other leverthrough its slot, engages with the pin 72,, on the outer surface of thewheel H. It will therefore be understood, that when the bridge is in itsnormal position, or open for traific, as shown in Fig. 1, that thegate-arms will stand in an upright position, and hence will offer noobstruction, but that as soon as the bridge begins to move in eitherdirection in the turning thereof, the ratchet pieces or bars 0, willengage the ratchet-gears O, which are located on the abutments, asbefore stated, and will cause the same to revolve, which operation willalso turn the wheel H, which is fixed on the shaftD', and through thelatters rigid connection h, with the wheel H, and their connections withthe levers, to raise and lower the same, thereby raising and loweringthe gate-arms.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. In a bridge-gate, the combination of a bridge having at each end aright and left ratchet-piece or bar, with a right and left ratchet-gearto engage said pieces or bars, said gear being mounted on ashaft havingits hearings on the abutment, the gate-arms having at their lower endssegmental gears and pivotally secured to a support or frame, theoperating levers fulcrumed on said frame and having at their upperportions segmental gears to engage the gears on the gate-arms, and intheir lower portions longitudinal slots, and the operating wheels H, and11', having the pins or projections to engage the slots in said levers,substantially as described.

2. In a bridge-gate, the combination with the gate-arms F, having thesegmental gears F, and pivotally secured at their lower ends to asupport, of the levers G, having the segmental gears g, to engage thegears on the gate-arms, the wheels H, and H, eccentrically connected tosaid levers, and adapted to give them a reciprocating motion, and havingmeans to engage the bridge in its movements, substantially as described.

AUGUST KO IILER.

W i to esses:

CHAS. C. TILLMAN, G. A. Due GAN.

